patch 8.2.4877: MS-Windows: Wrongly using Normal colors for termguicolors

Problem:    MS-Windows: Using Normal colors for termguicolors causes problems.
Solution:   Do not use Normal colors to set sg_gui_fg and sg_gui_bg.
            (Christian Brabandt, closes #10317, closes #10241)

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4877,
 /**/
     4876,
 /**/